The L 300-10 Charger and Power Supply for 10 BA 300 from Sennheiser is a battery charger and power supply that allows you to charge up to 10 BA 300 batteries. You can charge the batteries themselves, or you can charge them inside of compatible receivers such as the HDI 830, RI 830-S, and RI 900. The charger has LED lights that show charging status.

Has 10 spaces for charging BA 300 batteries, as well as HDI 830, RI 830-S, and RI 900 receivers